Troubleshooting Hints

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Before doing electrical diagnosis, check the mechanical linkages attached to the doors for binding, breakage, etc.
2. Check for corrosion at the connector terminals.
3. If Headlamp Doors open slowly, check for clean and tight ground G115 and fully charged Battery. If OK, replace Headlamp Door Motor Assembly.
4. If Headlamp Doors open only partially, perform Chart #1, "Both Headlamp Doors Remain Open or Closed." Chart #1 Both Headlamp Doors Remain Open/Closed
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (Refer to General Troubleshooting Procedures). Diagnostic Aids
^ Refer to System Diagnosis. System Diagnosis